I guess making them realize whats really worth living helps the soul move on, like Sai's brother finally seeing the finished artwork and how it touched his art, that alone helped free his soul from Edo Tensei, which is kinda pathetic in a way that Kabuto summons all these bad ass guys and the way they get defeated is by happy thoughts. What type of bull---- is that?
So basically, you're saying that in order to kill an -EDO TENSEI- summon is by sealing it's soul (ex. using death god)? How many did Kabuto summon? If that's the case. He wouldn't NEED Madara and his army of Zetzu, he can fight the whole alliance side with his Edo Tensei. You know what? He could fight the whole planet with it. Remember, every jutsu has a weakness.
Kankorou asked everyone to take care of Sai's brother -NOT KNOW- that he would be freed by looking at the completed art work. It's just the way Kishimoto plans out his story, showing us readers that the Alliance has some good skilled ninja as well because from reading the last two chapters? I see Akatsuki > Shinobi.
Getting back to the manga story. The alliance ambush side is just.... wow. That's some epic teamwork they got there.
Omoi - Outsmarted Deidara by flanking and cutting off the chakra string. Really threw Deidara off guard. And defusing Deidara's self destruct.
Kankorou - From reading back to the old chapters I figure he is another nobody and will probably die later. But actually, he -surpassed- the puppet master Sasori and showing us he is leading an ambush team. (This is the team that will have a huge impact depending if they're successful)
Sai - Need I say more? This guy is awesome.
Akatsuki - Sure as hell didn't expect a hard fight lol.
Also, on page - 11 after the explosion. Did you notice that the mist ninja is coming back? Perhaps we'll see a counter-attack in the next chapter.
Definitely a 5/5. Lots of action and lots of improvements from every shinobi.